# G6 Host-Bridge Prerequisites Design

> Date: 2026-04-19
> Status: Draft
> Upstream Decision: [2026-04-19-boundary-runtime-prerequisites-decision-report.md](D:/data/ideaSpace/rust/sgClaw/claw-new/docs/superpowers/reports/2026-04-19-boundary-runtime-prerequisites-decision-report.md)

## 1. Intent

This design defines the next bounded slice after the boundary-runtime prerequisites roadmap selects `G6 host-bridge prerequisites`.

The target is:

`G6 host-bridge prerequisites`

## 2. Why G6 First

`G6` is selected because:

1. it is blocked by one clearer prerequisite line
2. that prerequisite line is narrower than the combined local-doc and attachment burden on `G8`
3. it is the smaller bounded next step after `G7`

## 3. Scope Boundary

This design is limited to prerequisite scoping only.

It may include:

1. isolating the minimum host-bridge execution semantics needed before `G6` real-sample entry
2. defining a bounded prerequisite slice
3. publishing one follow-up bounded plan

It must not include:

1. executing a `G6` real sample
2. implementing host-runtime directly
3. reopening `G7`
4. opening `G8`
5. opening `G4 / G5`

## 4. Target Outcome

The bounded target outcome is one state:

1. one bounded `G6` prerequisites plan

## 5. Exit Condition

This design is complete when implementation can be bounded to one plan that:

1. freezes the `G6` prerequisite boundary
2. isolates the minimum blocked host-bridge capability
3. publishes a bounded follow-up plan